There is a pulley arrangement with a worker standing on a raised platform. The worker is standing on a platform 4 m above the floor. How many meters of rope must he pull through his hands to raise the block from the floor to his position?

Answers

Answer 1

Answer:

I am kind of confused-

Explanation:

Do you mind re-writing and explaining the question more?


Related Questions

#1. How does a topographic map help an architect?

A It shows where to build a structure.

B It shows how to build a structure.

C It shows the elevation of a building site.

D It tells the builder how the architect wants the parking lot.


#2. How do plants help in erosion control?

A Plant roots hold the soil in place.

B Plants are pretty and keep the neighborhood from being ugly.

C Plants don't help in erosion control.

D Plants allow the soil to float in the rainwater.


#3. The term deposition is used in paragraph 4. Based on context, this term means ____________.

A laying down of sediments

B erosion control

C silt fences

D landslides


#4. How do satellite views help scientists?

A They give scientists the ability to predict catastrophic events.

B Satellite cameras are not good enough to really be helpful.

C They allow scientists to know where valuable minerals are located.

D They allow scientists to see changes as they happen.

Answers

I believe these are the answers
1. C
2.A
3.A
4.A

Correct answer will get brainly

Answers

Answer:

divergent

Explanation:

Answer:

2nd one: divergent boundary

Explanation:

Earth's crust can come together and collide (a “convergent” plate boundary),

spread apart (a “divergent” plate boundary), and

slide past one another (a “transform” plate boundary).

Two pine cones are falling from a pine tree. Both pine cones are falling at the same speed.
If Pine Cone 1 has LESS MASS than Pine Cone 2, which pine cone has more kinetic energy?

Answers

Answer:

Pine cone 2 does, the more mass an object has, the more kinetic energy is has.

Explanation:

Brainliest Please?

Pine cone 2 has more kinetic energy.

Give two properties of compounds

Answers

color, odor, melting point, boiling point
I would say color and odor

Lucia is playing with magnetic toy vehicles. She has two identical toy vehicles (purple and pink) that start on opposite sides of a center magnet that cannot move. She moves both vehicles one space closer to the center magnet Please explain what would happen if Lucia released hold on the two magnet cars. How do you know?

Answers

Answer:

They would connect

Explanation:

The cars are magnetic

Answer:

The potential energy of both toy vehicles, purple and pink, increased. The potential energy of the two vehicles increased because they were moved against the magnatic forces. The potential energy of the pink car increased more then the potential energy of the purple car because the pink car was closer to the center magnet. Since the pink toy was moved closer to the magnet, it will have more potential energy because of the short distance between it and the centre magnet. As we know, potential energy does not increase linearly. Meaning when because the pink magnet is closer to the centre magnet than the purple it will have a greater potential energy increase than the purple. The purple toy as well is now closer to the magnet and will have a potential energy change, but not as large as the pink's change.

Explanation:

the image is a pic of the problem

What color in the visible spectrum has the longest wavelength?

A) green
B) blue
C) red
D) yellow

Answers

Answer:

red

Explanation:

iF YOU LOOK AT A SPECTRUM RED HAS THE LEAST ENERGY AND FREQUENCY AND THE LONGEST WAVELENGTH

also sorry had caps on lol but idw waste ur time rewriting it

Red has the longest wavelength.

Correct answer gets marked brainly

Answers

Answer:

CHEMICAL WHETEARING

Explanation:

good luck on ya test bud

CHEMICAL WHETEARING good luck on your test bud

The change from a gas to a liquid is called _____.


sublimation

evaporation

condensation

melting

Answers

Answer:

The change from a gas to a liquid is called

condensation.

The process of a liquid becoming a gas is called boiling (or vapourization), while the process of a gas becoming a liquid is called CONDENSATION.

A student conducts an investigation to study the impact of solar energy on land and water surfaces. He places a cup of soil and a beaker filled with water of the same mass on a plastic tray beside a window. After 10 minutes, he measures that the temperature of the water in the beaker is lower than the temperature of the soil. He places the plastic tray in the shade of a tree, and after another 10 minutes, he measures that the temperature of the water in the beaker is higher than the temperature of the soil.

What can the student conclude from his investigation?
Land heats up faster and releases heat faster than water.

Water heats up faster and releases heat faster than land.

Land heats up faster but releases heat slower than water.


Water heats up faster but releases heat slower than land.

Answers

Answer:

The answer is D. Water heats up faster but releases heat slower than land.

((I wasn't sure abt my answer but I was also 70% sure it's correct.. but have a good day!))

Miguel and Mariana both play drums in the marching band. The band director
told them that they needed to lower their amplitude. What do they need to do to lower it?

A. Strike the drum with less force/energy.

B. Strike the drum more often.

C. Strike the drum with more force/energy.

Answers

A Strike the drum with less force/energy
It’s A strike the drum with less force/energy

As a skier starts down a hill her velocity is 6 m/s. However, 3 seconds later her velocity is 25 m/s. What is the average velocity of the skier going down the hill?
To solve, I would use the equation:

Acceleration= (final velocity- starting velocity)/change in time

True
False

Answers

Answer:

false not completly sure

Explanation:

I’m thinking it’s false hopefully it’s right

help = brainlist please

Answers

(a) Waves P and Q have the same frequency, but wave P has twice the wavelength of wave Q

(b) Waves Q and R have the same wavelength, but wave R has twice the frequency of wave Q.

(c) Wave T shows a steady frequency but changing amplitude

(d) Wave S shows a steady amplitude but changing frequency

(e) Waves Q and R have a low amplitude and a steady frequency

HOPE THESE ARE RIGHT

a. wavelength,amplitude
b. Amplitude, wavelength
c. T
d. S
e. Q and R
hope they are fine for you to understand.
For more info,
Frequency are the number of waves passing a single point per second.
Amplitude is the distance from the equilibrium position to the maximum displacement.
Wavelength is the distance from one point of a wave to the same point of the next wave.

please help answer much as possible there's 4 questions

Answers

Answer:

6. A

7. A

9. B

hope dis helps ^-^

6.A
7. A
9.B
That is the answer btw
Not sure tho sorry if wrong!!!

Which condition is indicated by muscle spasms and jer ky or stiff movements?

frostbite

seizures

hyperthermia

Answers

seizures is the answer!

Answer:

Perhaps seizures

Explanation:

What is the net force?

Answers

400N ...... fkwnfjfjwjdpgnber
400N wusiueuwiwiwiwiss

Temperature is a measure of the average speed of the ____ of a thing.

Answers

Answer:

it is atoms and molecules

the answer is atoms and molecules

Out of these options, a vegetarian (one who does not eat chicken, pork, beef, or turkey only) can get the MOST protein from

A.1 Flinstone Vitamin
B.Nuts and Beans and Seafood
C.Chicken
D.None of the Above

Answers

B, nuts, beans, and seafood. Despite not being land animals, these foods still pack lots of protein.
B. They are good for you and you can eat them they are animal friendly!

Think of what the water is doing at different stages at a dam. The water stored behind a dam is an example of _____ energy. As the water flows through the dam, it turns a turbine of a generator, and so the kinetic energy is converted to _____
energy.

Answers

Answer:

Potential, mechanical

Explanation:

Hope this helps :) The second one may be iffy but hope it helps

Correct answer get brainly

Answers

Answer:

Your answer is the 3rd one: Erosion.

Explanation:

The process where rocks are broken down by natural forces such as wind is Erosion.

I have two questions
1. "Explain the relationship between amplitude and energy"

2."Explain the relationship between frequency and energy"

Answers

Answer:

1)The energy transported by a wave is directly proportional to the square of the amplitude. So whatever change occurs in the amplitude, the square of that effect impacts the energy. This means that a doubling of the amplitude results in a quadrupling of the energy

2)Just as wavelength and frequency are related to light, they are also related to energy. The shorter the wavelengths and higher the frequency corresponds with greater energy. So the longer the wavelengths and lower the frequency results in lower energy.

Explanation:

The correct answer to the question is : C) A pendulum swings back and forth.
EXPLANATION:
Before answering this question, first we have to understand the law of conservation of energy.
As per law of conservation of energy, energy can neither be created not be destroyed. It can only change from one form to another form, and the total energy of the universe is always constant.
As per the question, we have a pendulum which is moving back and forth.
Let us consider a pendulum which is taken to some height from its equilibrium or mean point. The energy possessed by the pendulum at this height is gravitational potential energy. When the pendulum is released, the potential energy is converted into kinetic energy. At mean point, whole of its potential energy is converted into kinetic energy.
Due to inertia, the pendulum reaches at the other extreme point. During its movement from mean point to extreme point, the kinetic energy is converted into potential energy. At extreme point, whole of its kinetic energy must have converted into potential energy. The same process will be repeated.
Hence, it obeys law of conservation of energy.
Hence, swinging of pendulum back and forth is the best example to demonstrate the law of conservation of energy.

A wave that travels through is called a _____ wave? PLZ be specific just one word answer

Answers

Answer:

A longitudinal wave

Explanation:

Hope this helps!

I think it’s a Longitudinal wave plz give brainliest
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